Re: Hi

Re: Hi

There are two types of decimals:- Terminating and recurring.A number like 12.5 or 1.25 or 3.75 is a terminating decimal.On the other hand, sometimes, you have numbers like 0.33333333333333.................,0.166666666666.....................,1.6666666666666 etc which are called recurring decimals.For example, 1'/2 or 1/8 is a terminating decimal.1/3, 5/6 etc are recurring decimals.I was talking about how recurring decimals are convereted into rational numbers (that is, fractions).If that is clear, look at the following illustration.How do we convert 2.166666666666.............. into a rational number?Let x = 2.16666666666666666............10 x = 21.66666666666666666.......... ----------(I)100x = 216.6666666666666666......... ----------(II)Subtracting (I) from (II),90x = 195,x = 195/90 or 13/6.Now, have I made myself clear?

Last edited by ganesh (2005-07-19 22:28:42)

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Re: Hi

The UKMT is basically a survey to see how people think in relation to maths. The tests are quite hard with Beginner (first 2 or 3 years of secondary school), Intermidate (last years of 2nd school) and higher is probably A-levels or University.

The test aims to find out how people think, etc.

You get 25 q's or something. The first 10 you get 5 points for each q, 11-25 you get 6 points but you lose 1 point in q's 11-20 and 2 points in q's 21-25. Can't remember exactly, but I did it every year. It was for the highest maths sets in every year.

It is very hard

Friends are angels who lift our feet when our own wings have trouble remembering how to fly

Re: Hi

I got a question to ask? Nora can paint 1/6 of a house in 1 day. Meera can paint the whole house 2 days faster. If both of them paint the house together, how long will they take. The answer is 2 3/4 days. I figured out the answer in school which is correct. But when I came home I forgot the answer. Now I am dieing to know the answer.

Re: Hi

Nora can paint 1/6 of a house in 1 day.Therfore, she takes 6 days to paint the house.Meera can paint the whole house 2 days faster.So, she can paint the house in 4 days.In one day, Meera can paint 1/4 of the house.If both of them paint the house together, in one day,they can paint (1/6+1/4) of th house. That is,10/24 or 5/12. Therefore, the whole house can be paintedby them in 12/5 days, that is 2 2/5 days.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.